1. Indicate which of the following compounds are structural isomers? (Hint: the structural isomers need to have the same molecular formula) a. A and B are structural isomers b. B and C are structural isomers c. A and C are structural isomers d.All are structural isomers A: Butane B: Propane — C: 2-Methyl D: Ethane propane 2. Review the structure of the molecule and choose the correct answer. b. a. A and B are branched-chain alkanes B and C are straight-chain alkanes c. B and Care branched-chain alkanes d.All are straight-chain alkanes b.2 b.2 c. 1 d.0 [Y] 3. How many hydrogen atoms are bonded to the carbon atom (c), indicated by an arrow, in the skeletal line structure of 2,2,4-trimethylhexane (we will review the name on Friday/Monday)? a.4 B

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Alkanes and Cycloalkanes

Alkanes are saturated organic compounds which are made up of C and H atoms. Alkanes have the general formula of CnH2n+2. Alkane contains sp3 hybridized carbon atoms with four sigmas (σ) bonds & every hydrogen atom is connected with one of the carbon atoms. The size of the alkane could be determined by the number of carbon atoms located in it.